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Optoelectronics Letters 2024年第2期20卷 89-93页

作者： SANG xien XU Yuan YIN Mengshuang WANG Fang LIOU Juin J LIU Yuhuai National Center for International Joint Research of Electronic Materials and Systems International Joint-Laboratory of Electronic Materials and Systems of Henan ProvinceSchool of Electrical and Information EngineeringZhengzhou UniversityZhengzhou 450001China Institute of Intelligence Sensing Zhengzhou UniversityZhengzhou 450001China Research Institute of Industrial Technology Co. Ltd.Zhengzhou UniversityZhengzhou 450001China Zhengzhou Way Do Electronics Co. Ltd.Zhengzhou 450001China School of Electrical and Information Engineering North Minzu UniversityYinchuan 750001China1

To improve the internal quantum efficiency(IQE)and light output power of In Ga N light-emitting diodes(LEDs),we proposed an In-composition gradient increase and decrease In Ga N quantum barrier *** analysis of its P-I graph,carrier concentration,and energy band diagram,the results showed that when the current was 100 m A,the In-composition gradient decrease quantum barrier(QB)structure could effectively suppress electron leakage while improving hole injection efficiency,resulting in an increase in carrier concentration in the active region and an improvement in the effective recombination rate in the quantum well(QW).As a result,the IQE and output power of the LED were effectively improved.

关键词： diodes quantum gradient

Electron-deficient ZnO induced by heterointerface engineering as the dominant active component to boost CO_(2)-to-formate conversion

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Carbon Energy 2024年第5期6卷 127-136页

作者： Qing Qin Zijian Li Yingzheng Zhang Haeseong Jang Li Zhai Liqiang Hou Xiaoqian Wei Zhe Wang Min Gyu Kim Shangguo Liu xien Liu College of Chemical Engineering Qingdao University of Science and TechnologyQingdaoChina Department of Chemistry City University of Hong KongHong Kong SARChina Department of Advanced Materials Engineering Chung-Ang UniversityAnseong-siGyeonggi-doRepublic of Korea Beamline Research Division Pohang Accelerator Laboratory(PAL)PohangRepublic of Korea

Electrocatalytic CO_(2)-to-formate conversion is considered an economically viable *** general,Zn-based nanomaterials are well-known to be highly efficient electrocatalysts for the conversion of CO_(2) to CO,but seldom do they exhibit excellent selectivity toward *** this article,we demonstrate that a heterointerface catalyst ZnO/ZnSnO3 with nanosheet morphology shows enhanced selectivity with a maximum Faradaic efficiency(FE)of 86%at−0.9 V versus reversible hydrogen electrode and larger current density for the conversion of CO_(2) to formate than pristine ZnO and *** particular,the FEs of the C1 products(CO+HCOO−)exceed 98%over the potential *** experimental measurements combined with theoretical calculations revealed that the ZnO in ZnO/ZnSnO3 heterojunction delivers the valence electron depletion and accordingly optimizes Zn d-band center,which results in moderate Zn-O hybridization of HCOO*and weakened Zn-C hybridization of competing COOH*,thus greatly boosting the HCOOH *** study highlights the importance of charge redistribution in catalysts on the selectivity of electrochemical CO_(2) reduction.

关键词： charge redistribution CO_(2)reduction reaction electrocatalyst heterointerfaces selectivity

不同促生菌配合生长调节剂处理对滩涂稻田盐分变化、水稻产量及品质的影响

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核农学报 2024年第1期38卷 160-168页

作者：张蛟陈澎军崔士友韩继军龙锡恩江苏沿江地区农业科学研究所江苏南通226012 江苏省地质局/自然资源部滨海盐碱地生态改良与可持续利用工程技术创新中心江苏南京210007 南通大学地理科学学院江苏南通226007

为了探明促生菌和生长调节剂对滩涂稻田盐分变化、水稻产量及稻米品质的影响,于2020年6—11月,在江苏南通沿海滩涂地区布置水稻种植试验,采用双因素裂区设计,主区为促生菌浸种处理,包括清水(CK)、如东促生菌(RD)和宁波促生菌(NB)浸种,... 详细信息

为了探明促生菌和生长调节剂对滩涂稻田盐分变化、水稻产量及稻米品质的影响,于2020年6—11月,在江苏南通沿海滩涂地区布置水稻种植试验,采用双因素裂区设计,主区为促生菌浸种处理,包括清水(CK)、如东促生菌(RD)和宁波促生菌(NB)浸种,副区为生长调节剂喷施处理,包括喷施清水(W)、碧护(0.136%赤·吲乙·芸苔)(T1)和复硝酚钠(T2)。结果表明,种稻过程中灌溉水盐度变化幅度为0.78~1.12 g·kg^(-1),CK、RD和NB处理水稻生长期间土壤盐分变化幅度为1.11~1.87 g·kg^(-1)。水稻产量在RD和NB下较CK分别增加了4.65%和1.83%;在T1和T2下较W分别增加了5.50%和1.05%;RD-T1下水稻产量较CK-W增加效果最好,达到11.66%(P13.45%和13.85%(P<0.05)。与CK相比,RD稻米糙米率、直链淀粉和蛋白质含量均显著降低,其他品质指标无显著差异。双因素分析结果表明,生长调节剂对穗长、每穗粒数、实粒数和产量均具有显著影响,促生菌对水稻千粒重具有显著影响,生长调节剂和促生菌仅对水稻千粒重具有显著互作效应。可见,促生菌结合生长调节剂处理对滩涂水稻增产具有明显效果,且生长调节剂主要提高了每穗粒数和实粒数,促生菌主要改善了滩涂水稻千粒重。本研究结果为探索适宜的农艺管理措施以达到滩涂水稻增产目的提供了技术参考。

关键词：盐分变化滩涂水稻促生菌生长调节剂

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日粮中添加发酵怀山药皮对母猪及哺乳期仔猪生产性能的影响

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中国饲料 2024年第4期 77-80页

作者：任希恩李广艳欧涛卫辉市农业农村局河南卫辉453100

文章旨在研究日粮中添加发酵怀山药皮对母猪繁殖性能及哺乳期仔猪生产性能的影响。试验将99头胎龄一致的经产妊娠母猪随机分为3组,分别为I组(空白对照组)、Ⅱ组(2.5%发酵山药皮组)、Ⅲ组(5%发酵山药皮组),每组33个重复,每个重复1头母猪... 详细信息

文章旨在研究日粮中添加发酵怀山药皮对母猪繁殖性能及哺乳期仔猪生产性能的影响。试验将99头胎龄一致的经产妊娠母猪随机分为3组,分别为I组(空白对照组)、Ⅱ组(2.5%发酵山药皮组)、Ⅲ组(5%发酵山药皮组),每组33个重复,每个重复1头母猪,试验期为妊娠85d至断奶后10d,共计65d。结果显示:(1)与I组相比,Ⅱ、Ⅲ组母猪产程、断奶发情间隔时间显著缩短(P 10d内发情率显著提高(P 0.05);Ⅱ、Ⅲ组仔猪腹泻率显著低于I组(P 0.05)。(4)Ⅱ、Ⅲ组产气荚膜梭菌数量显著低于I组(P 0.05),沙门氏菌、大肠杆菌数量有所下降,差异不显著(P> 0.05)。结论 :母猪日粮中添加发酵怀山药皮可降低母猪便秘率,提高母猪机体抗氧化能力,减少母猪哺乳阶段体重损失,缩短产程,提升母猪繁殖性能及仔猪哺乳期的生长性能;母猪日粮中发酵怀山药皮以2.5%添加水平为宜。

关键词：怀山药皮母猪繁殖性能哺乳仔猪生产性能

磷掺杂碳负载Zn_(x)P_(y)O_(z)常温常压下高效电催化合成氨

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物理化学学报 2024年第3期40卷 29-30页

作者：王佳秦清王哲赵旭浩陈云菲候利强刘尚果刘希恩青岛科技大学化工学院山东青岛266042

合成氨(NH_(3))的发展是现代工业进程和人类生存的基石。受氮气(N_(2))化学惰性的限制,当前的合成氨工业能源消耗高并且排放大量的二氧化碳。电化学氮气还原反应(NRR),是有望取代高能耗的Haber-Bosch(HB)合成法的一种绿色可持续的合成... 详细信息

合成氨(NH_(3))的发展是现代工业进程和人类生存的基石。受氮气(N_(2))化学惰性的限制,当前的合成氨工业能源消耗高并且排放大量的二氧化碳。电化学氮气还原反应(NRR),是有望取代高能耗的Haber-Bosch(HB)合成法的一种绿色可持续的合成氨工艺。然而,因氮气以及析氢竞争富反应(HER)导致电催化氮气还原极低的NH_(3)产率和能量转换效率一直是目前人工固氮领域面临的挑战。在本文中,我们报道了一种具有丰富孔结构的磷掺杂碳(PC)负载Zn_(3)(PO_(4))_(2)/Zn_(2)P_(2)O_(7)纳米复合材料(h-PC/Zn_(3)(PO_(4))_(2)/Zn_(2)P_(2)O_(7)),在酸性和中性介质中将N_(2)高效催化转化为NH_(3)。其独特的分级多孔结构提高了表面粗糙度并加快了氮气在催化剂体相中的扩散,这有利于延长氮气在催化剂表面的停留时间以及提高活性位点的利用效率。而多组分的均匀分布可以调节电子结构并优化反应中间体的吸附行为,进而提高活性位点的本征活性。在0.1mol·L^(-1)HCI电解液中,h-PC/Zn_(3)(PO_(4))_(2)/Zn_(2)P_(2)O_(7)在-0.2 V vs.可逆氢电极(RHE)电位下NH_(3)的产率可以达到38.7±1.2μg·h^(-1)·mgcat^(-1),法拉第效率为19.8%±0.9%。此外;h-PC/Zn_(3)(PO_(4))_(2)/Zn_(2)P_(2)O_(7)在0.1 mol·L^(-1)Na_(2)SO_(4)溶液中同样展现出优异的电催化氮气还原合成氨性能,NH_(3)产率及法拉第效率分别为17.1±0.8μg·h^(-1)·mgcat^(-1)和15.g%±0.6%,明显优于PC/Zn_(3)P_(2)、C/ZnO和大多数报道的非贵金属电催化剂。这种优异的性能主要归因于多孔结构有利于传质及多组分活性位点协同效应。此外,我们采用非原位X射线光电子能谱(XPS)、透射电子显微镜(TEM)和X射线衍射(XRD)等表征手段对NRR测试前后h-PC/Zn_(3)(PO_(4))_(2)/Zn_(2)P_(2)O_(7)的组成和结构变化进行了剖析。在反应后检测到了新增的N物种信号,证明催化剂确实发生了氮气还原反应。本研究提供了一种通过同步构建传质通道并耦合不同的活性位点以协同增强NRR活性和选择性的新思路,这对加快绿色制氨工业化具有重大意义。

关键词：氮气还原反应电催化剂孔结构多活性中心协同效应

Ultrafine PdAg alloy nanoparticles anchored on NH2-functionalized 2D/2D TiO_(2) nanosheet/rGO composite as efficient and reusable catalyst for hydrogen release from additive-free formic acid at room temperature

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Journal of Energy Chemistry 2021年第8期30卷 455-464,I0010页

作者： Xi Zhao Ping Dai Dongyan Xu Xumei Tao xien Liu Qingjie Ge State Key Laboratory Base of Eco-chemical Engineering College of Chemical EngineeringQingdao University of Science&TechnologyQingdao 266042China Shandong Provincial Key Laboratory Of Polymer Material Advanced Manufacturing Technology College of Electromechanical EngineeringQingdao University of Science&TechnologyQingdao 266061China Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering College of Chemistry and Chemical EngineeringNingxia University750021 YinchuanChina

A 2 D-2 D titanium dioxide nanosheet-reduced graphene oxide(TNS-r GO)composite with better electronic conductivity and hydrophilicity was prepared by the hydrothermal *** as-obtained TNS-r GO composite was further functionalized with 3-aminopropyltriethoxysilane(APTES)to provide a large amount of-NH2 groups on the surface for anchoring ultrafine Pd Ag alloy nanoparticles with an average particle size of 1.69 nm by a facile wet reduction *** from the combined effects of well-dispersed Pd Ag alloy nanoparticles,facilitated electron transfer from TNS-r GO to Pd,and increased electron density of active sites,the Pd8 Ag_(1)/NH_(2)-TNS-r GO catalyst exhibited excellent activity towards dehydrogenation of formic acid without adding any additives at 298 K,corresponding to an initial turn over frequency as high as 1090 h-1,which is much higher than that of most other state-of-theart catalysts.

关键词： Formic acid Dehydrogenation TNS-rGO composite PdAg alloy Amine-functionalization

Nitrogen, phosphorus co-doped carbon cloth as self-standing electrode for lithium-iodine batteries

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Nano Research 2019年第3期12卷 549-555页

作者： Kang Li Song Chen Si Chen xien Liu Wei Pan Jintao Zhang Key Laboratory for Colloid and Interface Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shandong University Jinan 250100 China State Key Laboratory Base of Eco-chemical Engineering College of Chemistry and Molecular Engineering Qingdao University of Science & Technology Qingdao 266042 China College of Chemistry Chemical Engineering and Materials Science Shandong Normal University Jinan 250014 China

Rechargeable lithium-iodine (Li-I2) battery is a promising energy storage system because of the high energy and power density. However, the shuttle effects of iodine species and the unstable features of l2 block the practical applications of Li-I2 batteries. Herein, a dual heteroatom doped porous carbon cloth is fabricated as the host material for lithium iodide (Lil). Specifically, the self-standing nitrogen, phosphorus co-doped carb on cloth with high Lil loading exhibits a large specific capacity (221 mAh·g^-1 at 1 C), excelle nt rate capability (95.8% capacity rete ntion at 5 C) and superior I ong cycli ng stability (2,000 cycles with a capacity rete ntion of 96%). Electrochemical kin etic an alysis con firms the domi nant contribution of capacitive effects at high sean rates, which is responsible for the good high-rate performance. The improved electrochemical performance mainly stems from two unique features of nitrogen, phosphorus co-doped porous carbon cloth. Heteroatom doping provides extra active sites for strong adsorption of iodine species while the highly porous structure with large surface area favors the capacitive effects at high rates. This work provides a facile yet efficient approach to regulating both redox reaction and capacitive effects via adjusting surface composition and pore structure of carbon materials for en hanced battery performance.

关键词： iodine heteroatom doping self-standing capacitive effect porous carbon

Adsorption performance and physicochemical mechanism of MnO_(2)-polyethylenimine-tannic acid composites for the removal of Cu(Ⅱ) and Cr(Ⅵ) from aqueous solution

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Frontiers of Chemical Science and Engineering 2021年第3期15卷 538-551页

作者： Xiaoyan Deng Luxing Wang Qihui Xiu Ying Wang Hong Han Dongmei Dai Yongji Xu Hongtao Gao xien Liu College of Environment and Safety Engineering State Key Laboratory Base of Eco-Chemical EngineeringQingdao University of Science&TechnologyQingdao 266042China College of Chemistry and Molecular Engineering State Key Laboratory Base of Eco-Chemical EngineeringQingdao University of Science&TechnologyQingdao 266042China

In this work,an adsorbent,which we call MnPT,was prepared by combining MnO_(2),polyethylenimine and tannic acid,and exhibited efficient performance for Cu(Ⅱ) and Cr(VI) removal from aqueous *** oxygen/nitrogen-containing functional groups on the surface of MnPT might increase the enrichment of metal ions by *** maximum adsorption capacities of MnPT for Cu(Ⅱ) and Cr(Ⅵ) were 121.5 and 790.2 mg·g^(-1),*** surface complexation formation model was used to elucidate the physicochemical interplay in the process of Cu(Ⅱ) and Cr(Ⅵ) co-adsorption on *** force,solvation action,adsorbate-adsorbate lateral interaction,and complexation were involved in the spontaneous adsorption *** electrostatic action was dominant in the initial stage,whereas chemical action was the driving force leading to adsorption *** should be noted that after adsorption on the surface of MnPT,Cr(Ⅵ) reacted with some reducing functional groups(hydroxylamine-NH_(2))and was converted into Cr(Ⅲ).The adsorption capacity declined by 12% after recycling five *** the adsorption mechanism might provide a technical basis for the procedural design of heavy metal *** MnPT nanocomposite has been proven to be a low-cost,efficient,and promising adsorbent for removing heavy metal ions from wastewater.

关键词： MnO_(2)-polyethylenimine-tannic acid composite surface complexation formation model Cu(Ⅱ) Cr(Ⅵ) physicochemical mechanism

Oxygen-deficient SnO_(2)nanoparticles with ultrathin carbon shell for efficient electrocatalytic N_(2)reduction

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Green Energy & Environment 2022年第4期7卷 672-679页

作者： Guangkai Li Haeseong Jang Zijian Li Jia Wang Xuqiang Ji Min Gyu Kim xien Liu Jaephil Cho State Key Laboratory Base of Eco-chemical Engineering College of Chemical EngineeringCollege of Chemistry and Molecular EngineeringQingdaoUniversity of Science and TechnologyQingdao266042China Department of Energy Engineering School of Energy and Chemical EngineeringUlsan National Institute of Science and Technology(UNIST)Ulsan689-798South Korea College of Materials Science and Engineering Qingdao UniversityQingdao266071China Beamline Research Division Pohang Accelerator Laboratory(PAL)Pohang790-784South Korea

For high-efficiency NH_(3)synthesis via ambient-condition electrohydrogenation of inert N_(2),it is pivotal to ingeniously design an active electrocatalyst with multiple features of abundant surfacial deficiency,good conductivity and large surface ***,oxygen-deficient SnO_(2)nanoparticles encapsulated by ultrathin carbon layer(d-SnO_(2)@C)are developed by hydrothermal deposition coupled with annealing process,as promising catalysts for ambient electrocatalytic N_(2)reduction.d-SnO_(2)@C exhibits high activity and excellent selectivity for electrocatalytic conversion of N_(2)to NH_(3)in acidic electrolytes,with Faradic efficiency as high as 12.7%at-0.15 V versus the reversible hydrogen electrode(RHE)and large NH_(3)yield rate of 16.68μg h^(-1)mgcat^(-1)at-0.25 V *** in 0.1 mol L^(-1)*** from the structural superiority of enhanced charge transfer efficiency and optimized surface states,d-SnO_(2)@C also achieves excellent long-term stability.

关键词： N_(2)reduction reaction NH_(3)synthesis SnO_(2) Electrocatalysts Ambient conditions